Henry 2011 Bioprocess Biosyst Eng: Difference between revisions
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{{Publication | {{Publication | ||
|title=Henry O, Jolicoeur M, Kamen A (2011) Unraveling the metabolism of HEK-293 cells using lactate isotopomer analysis. Bioprocess Biosyst Eng 34: 263-73. | |title=Henry O, Jolicoeur M, Kamen A (2011) Unraveling the metabolism of HEK-293 cells using lactate isotopomer analysis. Bioprocess Biosyst Eng 34:263-73. | ||
|info=[http://www.ncbi.nlm.nih.gov/pubmed/20848294 PMID: 20848294] | |info=[http://www.ncbi.nlm.nih.gov/pubmed/20848294 PMID: 20848294] | ||
|authors=Henry O, Jolicoeur M, Kamen A | |authors=Henry O, Jolicoeur M, Kamen A | ||
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|abstract=HEK-293 is the most extensively used human cell line for the production of viral vectors and is gaining increasing attention for the production of recombinant proteins by transient transfection. To further improve the metabolic characterization of this cell line, we have performed cultures using ยนยณC-labeled substrates and measured the resulting mass isotopomer distributions in lactate by LC/MS. Simultaneous metabolite and isotopomer balancing allowed improvement and validation of the metabolic model and quantification of key intracellular pathways. We have determined the amounts of glucose carbon channeled through the PPP, incorporated into the TCA cycle for energy production and lipids biosynthesis, as well as the cytosolic and mitochondrial malic enzyme fluxes. Our analysis also revealed that glutamine did not significantly contribute to lactate formation. An improved and quantitative understanding of the central carbon metabolism is greatly needed to pursue the rational development of engineering approaches at both the cellular and process levels. | |abstract=HEK-293 is the most extensively used human cell line for the production of viral vectors and is gaining increasing attention for the production of recombinant proteins by transient transfection. To further improve the metabolic characterization of this cell line, we have performed cultures using ยนยณC-labeled substrates and measured the resulting mass isotopomer distributions in lactate by LC/MS. Simultaneous metabolite and isotopomer balancing allowed improvement and validation of the metabolic model and quantification of key intracellular pathways. We have determined the amounts of glucose carbon channeled through the PPP, incorporated into the TCA cycle for energy production and lipids biosynthesis, as well as the cytosolic and mitochondrial malic enzyme fluxes. Our analysis also revealed that glutamine did not significantly contribute to lactate formation. An improved and quantitative understanding of the central carbon metabolism is greatly needed to pursue the rational development of engineering approaches at both the cellular and process levels. | ||
|keywords=Metabolism, 13C-metabolic flux analysis, Isotopic tracer | |keywords=Metabolism, 13C-metabolic flux analysis, Isotopic tracer | ||
|editor=[[Gnaiger E]], | |||
}} | }} | ||
{{Labeling | {{Labeling | ||
|organism=Human | |organism=Human | ||
| | |tissues=HEK | ||
|preparations=Intact cells | |preparations=Intact cells | ||
|additional=Malic enzyme | |additional=Malic enzyme | ||
}} | }} |
Latest revision as of 04:29, 29 February 2020
Henry O, Jolicoeur M, Kamen A (2011) Unraveling the metabolism of HEK-293 cells using lactate isotopomer analysis. Bioprocess Biosyst Eng 34:263-73. |
Henry O, Jolicoeur M, Kamen A (2011) Bioprocess Biosyst Eng
Abstract: HEK-293 is the most extensively used human cell line for the production of viral vectors and is gaining increasing attention for the production of recombinant proteins by transient transfection. To further improve the metabolic characterization of this cell line, we have performed cultures using ยนยณC-labeled substrates and measured the resulting mass isotopomer distributions in lactate by LC/MS. Simultaneous metabolite and isotopomer balancing allowed improvement and validation of the metabolic model and quantification of key intracellular pathways. We have determined the amounts of glucose carbon channeled through the PPP, incorporated into the TCA cycle for energy production and lipids biosynthesis, as well as the cytosolic and mitochondrial malic enzyme fluxes. Our analysis also revealed that glutamine did not significantly contribute to lactate formation. An improved and quantitative understanding of the central carbon metabolism is greatly needed to pursue the rational development of engineering approaches at both the cellular and process levels. โข Keywords: Metabolism, 13C-metabolic flux analysis, Isotopic tracer โข Bioblast editor: Gnaiger E
Labels:
Organism: Human
Tissue;cell: HEK
Preparation: Intact cells
Malic enzyme